Invention Grant
US09185474B2 Wavelength path switching method, optical communication system, optical communication device, optical repeater, and network management device 有权
波长路径切换方法,光通信系统,光通信设备,光中继器,网管系统

Wavelength path switching method, optical communication system, optical communication device, optical repeater, and network management device
Abstract:
At least one of a first device, a second device, and a relay device compensates for wavelength dispersion in a first optical wavelength path. The first or second device changes a wavelength dispersion compensation amount at the first or second device so that wavelength dispersion in a second optical wavelength path is compensated. The relay device changes a wavelength dispersion compensation amount at the relay device so that a total amount of wavelength dispersion of the signal light compensated in the first optical wavelength path does not change substantially with the change in the wavelength dispersion compensation amount at the first or second device. The first optical wavelength path is switched to the second optical wavelength path after the wavelength dispersion compensation amount at the first or second device is changed to a value that can compensate for the wavelength dispersion in the second optical wavelength path.
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